Interference effect in the Landau-Zener tunneling of the antiferromagnetically coupled dimer of single-molecule magnets

Details Interference effect in the Landau-Zener tunneling of the antiferromagnetically coupled dimer of single-molecule magnets Interference effect in the Landau-Zener tunneling of the antiferromagnetically coupled dimer of single-molecule magnets

2004-04-30

arxiv.org/abs/cond-mat/0404734v1

Phys. Rev. B 70, 212403 (2004)

Physics

Condensed Matter

Statistical Mechanics

4 PR pages, 2 figures

Scientific paper

10.1103/PhysRevB.70.212403

Two antiferromagnetically coupled tunneling systems is a minimal model
exhibiting the effect of quantum-mechanical phase in the Landau-Zener effect.
It is shown that the averaged staying probability oscillates vs resonance shift
between the two particles, as well as vs sweeping rate. Such a resonance shift
can be produced in Mn-4 dimers by the gradient of the magnetic field.

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